Classification
100 - Philosophy & psychology
300 - Social sciences
6
320 - Political science
330 - Economics
700 - The arts; fine & decorative arts
900 - History & geography
600 - Technology
5
400 - Language
4
780 - Music
4
370 - Education
3
620 - Engineering & allied operations
3
770 - Photography, photographs & computer art
3
340 - Law
2
380 - Commerce, communications & transportation
2
410 - Linguistics
2
658 - General management
2
720 - Architecture
2
333 - Economics of land & energy
1
530 - Physics
1
630 - Agriculture & related technologies
1